Extended Module

File Format
Name	Extended Module
Ontology	Electronic File Formats Audio and Music Extended Module
Extension(s)	.xm
PRONOM	fmt/323

Not to be confused with the Sirius XM satellite radio service, with which it has nothing to do.

XM (extended module) is an audio format introduced by (and primarily produced by) FastTracker 2, a now defunct tracker for MS-DOS. The format is also used by other trackers, such as DigiTracker and MilkyTracker.

Information

The tracker which produced the file can be identified by means of the string at offset 38:

Tracker / Identifying string

	String
DigiTracker	Composer's name
FastTracker 2	"FastTracker II"

• The XM module format description for XM files version $0104
• The above, with a number of corrections and additions
• Errors in the XM format documentation

Software

• FastTracker 2
• FastTracker 2 in-browser emulation

Links

• Example .xm files
• Format info